
    .bk-captcha-btn {
      width: 298px;
      height: 42px;
      line-height: 42px;
      background-image: linear-gradient(180deg, #ffffff 0%, #f3f3f3 100%);
      border: 1px solid #ccc;
      border-radius: 2px;
      min-width: 160px;
      cursor: pointer;
      opacity: 1;
      padding: 0 46px;
      box-sizing: border-box;
      font-size: 14px;
      text-align: center;
    }

    .bk-captcha-holder {
      position: fixed;
      _position: absolute;
      z-index: 2147483647;
      left: 0;
      top: 0;
      height: 100%;
      width: 100%;
      transition: opacity 0.5s;
    }

    .bk-captcha-holder.hide {
      opacity: 0;
      display: none;
    }

    .bk-captcha-holder .bk-captcha-ghost {
      position: absolute;
      left: 0;
      top: 0;
      width: 100%;
      height: 100%;
      _width: 2000px;
      _height: 1000px;
      background-color: black;
      opacity: 0.6;
    }

    .bk-captcha-holder .bk-captcha-box {
      width: 80%;
      min-width: 230px;
      max-width: 278px;
      margin: auto auto;
      background: #FCFCFC;
      position: absolute;
      top: 40%;
      left: 50%;
      transform: translate(-50%, -50%);
      border-radius: 5px;
      outline: none;
      border: 1px solid #d1d1d1;
    }

    .bk-captcha-holder .bk-captcha-box .close-btn {
      color: #cccccc;
      margin: 9px;
      line-height: 14px;
      font-size: 18px;
      position: absolute;
      right: 0;
      cursor: pointer;
    }

    .bk-captcha-holder .bk-captcha-box .title {
      font-family: PingFangSC-Medium;
      font-size: 22px;
      color: #222222;
      letter-spacing: -0.53px;
      text-align: center;
      line-height: 24px;
      margin-top: 44px;
    }

    .bk-captcha-holder .bk-captcha-box .image-code-box {
      width: 100%;
      text-align: center;
      margin-top: 23px;
    }

    .bk-captcha-holder .image-code-box .image-code {
      width: 65%;
      height: 60px;
      cursor: pointer;
    }

    .bk-captcha-holder .image-code-box .tip {
      display: inline-block;
      font-family: PingFangSC-Regular;
      font-size: 12px;
      color: #999999;
      letter-spacing: -0.07px;
      line-height: 12px;
      margin-top: 6px;
      cursor: pointer;
    }

    .bk-captcha-holder .input-box {
      position: relative;
      width: 100%;
      box-sizing: border-box;
      display: flex;
      flex-direction: row;
      justify-content: center;
      margin-bottom: 50px;
    }

    .bk-captcha-holder .input-box .input {
      position: absolute;
      width: 60%;
      height: 100%;
      outline: none;
      bottom: 0;
      border: none;
      padding: 0;
      z-index: -1;
      opacity: 0;
    }

    .bk-captcha-holder .input-box div {
      width: 44px;
      height: 44px;
      border-bottom: 2px solid #999999;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
    }

    .bk-captcha-holder .input-box div.on {
      border-bottom: 2px solid #3072f6;
    }

    .bk-captcha-holder .input-box div.on::before {
      float: right;
      content: " ";
      background-color: #3072f6;
      letter-spacing: 0.88px;
      width: 2px;
      height: 26px;
      animation: cursor-blinks 1.1s infinite steps(1, start);
    }

    @keyframes cursor-blinks {
      0% {
        opacity: 1;
        display: block;
      }

      50% {
        opacity: 0;
        display: none;
      }

      100% {
        opacity: 1;
        display: block;
      }
    }


    .bk-captcha-holder .input-box div:not(:last-child) {
      margin-right: 15px;
    }

    .bk-captcha-holder .bk-captcha-toast {
      color: #fff;
      width: 146px;
      height: 50px;
      margin: auto auto;
      position: absolute;
      top: 55%;
      left: 50%;
      transform: translate(-50%, -50%);
      border-radius: 5px;
      outline: none;
      background: #222222;
      box-shadow: 0 5px 10px 0 rgba(0, 0, 0, 0.20);
      text-align: center;
      line-height: 50px;
      transition: opacity 0.5s;
      display: none;
      opacity: 0;
    }


